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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Practical limits to distance off by VSA
From: David McN
Date: 2023 Apr 1, 16:00 -0700
From: David McN
Date: 2023 Apr 1, 16:00 -0700
After placing 3rd in our race to St Leonards from Melbourne into a cold southerly F5 under grey drizzly skies, Flinders Peak cleared into view well enough for a VSA on the return leg. My plot is attached. My VSA fix by height and compass bearing is shown as is my GPS position at the time. I made no adjustments other than 2' index error correction to my observed 35'. Regarding the distance thus calculated by 1.86 * elevation (m) / m.o.a it was very close to the real thing. But, I made a bad compass bearing measurement. Which itself is illuminating.
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